Home / 86,174,720.82-128,503,127.64-85,397,488.38

Finding the Fourth Proportional to 86,174,720.82, 128,503,127.64 and 85,397,488.38

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Solution

The fourth proportional to 86,174,720.82, 128,503,127.64 and 85,397,488.38 is: 127,344,124.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,174,720.82 : 128,503,127.64 = 85,397,488.38 : x
  2. Step 2: Convert to fraction form
    86,174,720.82/128,503,127.64 = 85,397,488.38/x
  3. Step 3: Cross multiply
    86,174,720.82x = 128,503,127.64 × 85,397,488.38
  4. Step 4: Simplify right side
    86,174,720.82x = 10,973,844,349,430,556
  5. Step 5: Solve for x
    x = 10,973,844,349,430,556/86,174,720.82
  6. Step 6: Final answer
    x = 127,344,124.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.